Units of time in ancient Tamil history
- 12 (base 8) or 10 kuzhigaL = 1 miy = 66.6666 millisecond-the time taken by the young human eyes to flap once.
- 2 kaNNimaigaL (கண்ணிமைகள்) = 1 kainodi (கைநொடி) = 0.125 second
- 2 kainodi = 1 maatthirai (மாத்திரை) = 0.25 second
- 6 (base 8) or 6 miygaL = 1 siRRuzhi (nodi) சிற்றுழி (நொடி) = 0.40 second-the time taken for a bubble (created by blowing air through a bamboo tube into a vessel 1 saaN high, full of water) to travel a distance of one saaN (சாண்).
- 2 maatthiraigaL = 1 kuru (குறு) = 0.50 second
- 2 (base 8) or 2 nodigaL = 1 vinaadi வினாடி = 0.80 second-the time for the adult human heart to beat once
- 2 1⁄2 nodigaL = 2 kuru = 1 uyir உயிர் = 1 second
- 5 nodigaL = 2 uyir = 1 saNigam சாணிகம் = 1/2 aNu அணு = 2 seconds
- 12 (base 8) or 10 nodigaL = 1 aNu = 4 seconds
- 6 (base 8) or 6 aNukkaL = 12 saNigam = 1 thuLi துளி = 1 naazhigai-vinaadi நாழிகை வினாடி = 24 seconds
- 12 (base 8) or 10 thuLigaL = 1 kaNam கணம் = 4 minutes
- 6 (base 8) or 6 kaNangaL = 1 naazhigai= 24 minutes
- 12 (base 8) or 10 naazhigaigaL = 4 saamam சாமம் = 1 siRupozhuthu சிறுபொழுது = 240 minutes = 4 hours
- 6 (base 8) or 6 siRu-pozhuthugaL = 1 naaL நாள் (1 day) = 24 hours
- 7 naaTkaL = 1 vaaram வாரம் (1 week)
- 15 naaTkaL = 1 azhuvam அழுவம் (1 fortnight)
- 29.5 naaTkaL = 1 thingaL திங்கள் (1 lunar month)
- 2 thingaL = 1 perum-pozhuthu பெரும்பொழுது (1 season)
- 6 perum-pozhuthugaL = 1 AaNdu (1 year)
- 64 aaNdugaL = 1 vattam வட்டம் (1 cycle)
- 4096 (=8^4) AaNdugaL = 1 Oozhi ஊழி (1 epoch)
Area Measurement
- 1 Marakkal vaedaipadu (seeds required for planting rice) = 8 cents
- 12.5 Marakkal vaedaipadu = 100 cents (one acre)
குறுணி = 8 cents பதக்கு = 16 cents முக்குறுணி = 24 centsArea calculation and Measurement Chart .
- 1 hectare = 2 acre 47 cent
- 1 hectare = 10,000 sq m
- 1 acre = 0.405 hectare
- 1 acre = 4046.82 sq m
- 1 acre = 43,560 sq ft
- 1 acre = 100 cent = 4840 sq gejam
- 1 cent = 435.6 sq ft
- 1 cent = 40.5 sq m
- 1 ground = 222.96 sq m = 5.5 cent
- 1 ground = 2400 sq ft
- 1 Veesam = 6*6 sq ft = 36 sq ft
- 1 Kuzhi = 4 Veesams
- 1 Kuzhi = 144 sq ft
- 1 Kuzhi = 0.331 cents
- 1 Kāni = 400 kuzhis
- 1 acre = 302 kuzhi
- 1 ankanam = 8 sq yd/72 sq ft
- 1 Mā = 100 kuzhi = 14400 sq ft
- 1 Kāni = 4 Mā = 57600 sq ft
- 1 kāni = 132 cents = 1.32 acre
- 1 acre = 75.625 kuzhi
- 1 Veļi = 5 kāni = 20 Ma = 6.62 Acre = 2.679 hectares
- 1 dismil = 2.5 cent
- 1 furlong = 660 feet = 220 kejam
- 1 kilometre = 5 furlong
- 1 link / chain = 0.66 foot = 7.92 inch
- 1 kejam = 9.075 sq ft
- 1 mile = 8 furlong
- 1 ares = 1076 sq ft = 2.47 cent
- 1 chain = 22 kejam
- 1 furlong = 10 chain
- 1 kejam = 0.9144 metre
- 1 township = 36 sq mile
- 1 sq mile = 640 acre
- 1 cent = 48.4 sq kejam
Units of ancient trade
Balance weights
Gold weights
- 4 nel edai (நல் எடை) = 1 kunRimaNi (குன்றிமணி)
- 2 kunRimaNi (குன்றிமணி) = 1 manchaadi (மாஞ்சாடி)
- 1 manchaadi (மாஞ்சாடி) = 1 paNavedai (பணவெடை)
- 5 paNavedai (பணவெடை) = 1 kazhanchu (கழஞ்சு)
- 8 paNavedai (பணவெடை) = 1 varaaganedai (வராகனெடை)
- 20 paNavedai (பணவெடை) = 4 kazhanchu(கழஞ்சு) = 1 kaqhsu (கஃசு)
- 80 paNavedai (பணவெடை)= 16 kazhanchu(கழஞ்சு)= 4 kaqhsu (கஃசு)= 1 palam (பலம்)
- 1.5 Kazhanchu (கழஞ்சு) = 8 grams or one sovereign/pavun.
Goods weights
- 32 kunRimaNi = 1 varaaganedai
- 10 varaaganedai = 1 palam
- 40 palam = 1 veesai
- 1000 palam = 1 kaa
- 6 veesai = 1 thulaam
- 8 veesai = 1 maNangu
- 20 maNangu = 1 paaram.
Grain volume
- 1 kuNam = smallest unit of volume
- 9 kuNam = 1 mummi
- 11 mummi = 1 aNu
- 7 aNu = 1 immi
- 7 immi = 1 uminel
- 1 sittigai = 7 uminel
- 360 nel = 1 sevidu
- 5 sevidu = 1 aazhaakku
- 2 aazhaakku = 1 uzhakku
- 2 uzhakku = 1 uri
- 2 uri = 1 padi
- 8 padi = 1 marakkaal(kuRuNi)
- 2 marakkaal (kuRuNi) = 1 padhakku
- 2 padhakku = 1 thooNi
- 5 marakkaal = 1 paRai
- 80 paRai = 1 karisai
- 48 padi = 1 kalam
- 96 padi = 1 pothi (moodai)
- 21 marakkal = 1 Kottai
- 22 maakaani = 100 g
Fluid volume
- 5 sevidu = 1 aazhaakku
- 2 mahani = 1 aazhakku (arai kal padi)
- 2 aazhaakku = 1 uzhakku (Kal padi)
- 2 uzhakku = 1 uri (Arai padi)
- 2 uri = 1 padi
- 4 padi= 1 marakkaal
- 2 marakkaal (kuRuNi) = 1 padhakku
- 2 padhakku = 1 thooNi
- 21 Marakkal = 1 Kottai
Length
- 1 Koan = (115.8953125 picometre)
- 10 Koan = 1 Nunnanu (0.1158953125 nanometre)
- 10 Nunnanu = 1 Anu (atom) (1.158953125 nanometre)
- 8 Anu = 1 Kadhirthugal (9.271625 nanometre)
- 8 Kadhirthugal = 1 Thusumbu (74.173 nanometre)
- 8 Thusumbu = 1 Mayirnuni (0.593384 micrometre)
- 8 Mayirnuni = 1 Nunnmanal (4.74707 micrometre)
- 8 Nunnmanal = 1 Siru-kadugu (37.976563 micrometre)
- 8 Siru-kadugu = 1 Yel (303.8125 micrometre or 0.3038125 millimetre)
- 8 Yel = 1 Nel (2.4305 millimetre)
- 8 nel = 1 viral = 8^8 aNu (atom) = 1.9444 centimetre
- 12 viral = 1 saaN = 100 immi= 23.3333 centimetre = 9 inch
- 2 saaN = 1 muzham = 46.6666 centimetre = 1.5 feet
- 2 saan = 1 muzham
- 2 muzham = 1 yard = 3 feet = 1 yard
- 2 yard(yaar) = 1 paagam
- 110 pagam = 1 furlong
- 8 furlong = 1 mile
- 5 furlong = 1 kilometre or 1000 metre
- 625 paagam = 1 kaadham = 5000 saaN = 1166.66 metres = 1.167 kilometre
Likeness (Saartthal)
Likeness has attributes of tone, sound, colour and shape for comparison of a given substance with a known standard.Whole numbers

- 1 = onRu
- 10 = patthu
- 100 = nooRu
- 1000 = aayiram
- 10,000 = pathaayiram
- 100,000 = nooRaayiram
- 1000,000 = meiyiram
- 10^9 = thoLLunn
- 10^12 = eegiyam
- 10^15 = neLai
- 10^18 = iLanji
- 10^20 = veLLam
- 10^21 = aambal
- 1 ONDRU = One = 10 0
- 10 = PATHU = Ten = 10 1
- 100 = NOORU = Hundred = 10 2
- 1,000 = AAYIRAM = One Thousand = 10 3
- 10,000 = PATHAAYIRAM = Ten Thousand = 10 4
- 1,00,000 = LATCHAM = Hundred Thousand = 10 5
- 10,00,000 = PATHU LATCHAM = One Million = 10 6
- 1,00,00,000 = KODI = Ten Million = 10 7
- 10,00,00,000 = PATHU KODI = Hundred Million = 10 8
- 1,00,00,00,000 = ARPUTHAM = One Billion = 10 9
- 10,00,00,00,000 = PATHU ARPUTHAM = Ten Billion = 10 10
- 1,00,00,00,00,000 = NIGARPUTHAM = Hundred Billion = 10 11
- 10,00,00,00,00,000 = PATHU NIGARPUTHAM = One Trillion = 10 12
- 1,00,00,00,00,00,000 = KUMBAM = Ten Trillion = 10 13
- 10,00,00,00,00,00,000 = PATHU KUMBAM = Hundred Trillion = 10 14
- 1,00,00,00,00,00,00,000 = GANAM = One Quadrillion = 10 15
- 10,00,00,00,00,00,00,000 = PATHU GANAM = Ten Quadrillion = 10 16
- 1,00,00,00,00,00,00,00,000 = KARPAM = Hundred Quadrillion = 10 17
- 10,00,00,00,00,00,00,00,000 = PATHU KARPAM = One Quintillion = 10 18
- 1,00,00,00,00,00,00,00,00,000 = NIKARPAM = Ten Quintillion = 10 19
- 10,00,00,00,00,00,00,00,00,000 = PATHU NIKARPAM = Hundred Quintillion = 10 20
- 1,00,00,00,00,00,00,00,00,00,000 = PATHUMAM = One Sextillion = 10 21
- 10,00,00,00,00,00,00,00,00,00,000 = PATHU PATHUMAM = Ten Sextillion = 10 22
- 1,00,00,00,00,00,00,00,00,00,00,000 = SANGGAM = Hundred Sextillion = 10 23
- 10,00,00,00,00,00,00,00,00,00,00,000 = PATHU SANGGAM = One Septillion = 10 24
- 1,00,00,00,00,00,00,00,00,00,00,00,000 = VELLAM = Ten Septillion = 10 25
- 10,00,00,00,00,00,00,00,00,00,00,00,000 = PATHU VELLAM = Hundred Septillion = 10 26
- 1,00,00,00,00,00,00,00,00,00,00,00,00,000 = ANNIYAM = One Octillion = 10 27
- 10,00,00,00,00,00,00,00,00,00,00,00,00,000 = PATHU ANNIYAM = Ten Octillion = 10 28
- 1,00,00,00,00,00,00,00,00,00,00,00,00,00,000 = ARTTAM = Hundred Octillion = 10 29
- 10,00,00,00,00,00,00,00,00,00,00,00,00,00,000 = PATHU ARTTAM = One Nonillion = 10 30
- 1,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 = PARARTTAM = Ten Nonillion = 10 31
- 10,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 = PATHU PARARTTAM = Hundred Nonillion = 10 32
- 1,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 = POORIYAM = One Decillion = 10 33
- 10,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 = PATHU POORIYAM = Ten Decillion = 10 34
- 1,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 = MUKKODI = Hundred Decillion = 10 35
- 10,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 = PATHU MUKKODI = One Undecillion = 10 36
- 1,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 = MAHAYUGAM = Ten Undecillion = 10 37
- 1 ONDRU = One = 10 0
- 10 = PATHU = Ten = 10 1
- 100 = NOORU = Hundred = 10 2
- 1,000 = AAYIRAM = One Thousand = 10 3
- 10,000 = PATHAAYIRAM = Ten Thousand = 10 4
- 100,000 = LATCHAM = Hundred Thousand = 10 5
- 1,000,000 = PATHU LATCHAM = One Million = 10 6
- 10,000,000 = KODI = Ten Million = 10 7
- 100,000,000 = PATHU KODI = Hundred Million = 10 8
- 1,000,000,000 =NOORU KODI = One Billion = 10 9
Fractions
- 1 – ஒன்று – onRu
- 3/4 = 0.75 – முக்கால் – mukkaal
- 1/2= 0.5 – அரை – arai
- 1/4 = 0.25 – கால் – kaal
- 1/5 = 0.2 – நாலுமா – naalumaa
- 3/16 = 0.1875 – மும்மாகாணி –mummaakaani
- 3/20 = 0.15 – மும்மா – mummaa
- 1/8 = 0.125 – அரைக்கால் – araikkaal
- 1/10 = 0.1 – இருமா – irumaa
- 1/16 = 0.0625 – மாகாணி (வீசம்) – maakaaNi (veesam)
- 1/20 = 0.05 – ஒருமா – orumaa
- 3/64 = 0.046875 – முக்கால்வீசம் – mukkaal veesam
- 3/80 = 0.0375 – முக்காணி – mukkaaNi
- 1/32 = 0.03125 – அரைவீசம் – araiveesam
- 1/40 = 0.025 – அரைமா – araimaa
- 1/64 = 0.015625 – கால் வீசம் – kaal veesam
- 1/80 = 0.0125 – காணி – kaaNi
- 3/320 = 0.009375 – அரைக்காணி முந்திரி – araikkaaNi munthiri
- 1/160 = 0.00625 – அரைக்காணி – araikkaaNi
- 1/320 = 0.003125 – முந்திரி – munthiri
- 3/1280 = 0.00234375 – கீழ் முக்கால் – keel mukkal
- 1/640 = 0.0015625 – கீழரை – keelArai
- 1/1280 = 7.8125e-04 – கீழ் கால் – keel kaal
- 1/1600 = 0.000625 – கீழ் நாலுமா – keel nalumaa
- 3/5120 ≈ 5.85938e-04 – கீழ் மூன்று வீசம் – keel moondru veesam
- 3/6400 = 4.6875e-04 – கீழ் மும்மா – keel mummaa
- 1/2500 = 0.0004 – கீழ் அரைக்கால் – keel araikkaal
- 1/3200 = 3.12500e-04 – கீழ் இருமா – keel irumaa
- 1/5120 ≈ 1.95313e-04 – கீழ் வீசம் – keel veesam
- 1/6400 = 1.56250e-04 – கீழொருமா – keelorumaa
- 1/102400 ≈ 9.76563e-06 – கீழ்முந்திரி – keezh munthiri
- 1/2150400 ≈ 4.65030e-07 – இம்மி – immi
- 1/23654400 ≈ 4.22754e-08 – மும்மி – mummi
- 1/165580800 ≈ 6.03935e-09 – அணு – aNu
- 1/1490227200 ≈ 6.71039e-10 – குணம் – kuNam
- 1/7451136000 ≈ 1.34208e-10 – பந்தம் – pantham
- 1/44706816000 ≈ 2.23680e-11 – பாகம் – paagam
- 1/312947712000 ≈ 3.19542e-12 – விந்தம் – vintham
- 1/5320111104000 ≈ 1.87966e-13 – நாகவிந்தம் – naagavintham
- 1/74481555456000 ≈ 1.34261e-14 – சிந்தை – sinthai
- 1/1489631109120000 ≈ 6.71307e-16 – கதிர்முனை –kathirmunai
- 1/59585244364800000 ≈ 1.67827e-17 – குரல்வளைப்படி –kuralvaLaippidi
- 1/3575114661888000000 ≈ 2.79711e-19 -வெள்ளம் – veLLam
- 1/357511466188800000000 ≈ 2.79711e-21 – நுண்மணல் –nuNNmaNal
- 1/2323824530227200000000 ≈ 4.30325e-22 – தேர்த்துகள் –thaertthugal
Currency
- 1 pal (wooden discs/sea shellots) = (approximately) 0.9 grain
- 8 (or 10 base 8) paRkaL = 1 senkaaNi (copper/bronze) = 7.2 grains(misinterpretted by Roman accounts as 10 base 10 paRkal = 9 grains)
- 1/4 senkaaNi = 1 kaalkaaNi (copper) = 1.8 grains (misinterpretted by Roman accounts as 2.25 grains)
- 64 (or 100 base 8) paRkaL = 1 KaaNap-pon aka. Kaasu panam(gold) = 57.6 grains
- 1 Roman dinarium was traded on par with 2 KaaNappon plus 1 SenkaaNi(=124 grains).
- 18 Ana = 2.85 Rupee, 16 Ana = 1 Rupee, 1 Ana = 3 Thuttu, 1/4 Ana = 3/4 (mukkal) thuttu
Divisions of a Day
சிறுபொழுது (Daily r /> 1. காலை (kaalai): 6 am-10 am2. நண்பகல் (naNpagal): 10 am-2 pm
3. ஏற்பாடு (ERpaadu): 2 pm-6 pm
4. மாலை (maalai): 6 pm-10 pm
5. இடையாமம் (idaiyaamam): 10 pm-2 am
6. வைகறை (vaikaRai): 2 am-6 am
Courtesy: wikipedia