Mass and Weight · Unit Converter

Convert Seer (Ser) to Femtogram

Convert seers (ser) to femtograms instantly. 1 seer (ser) = 9.331043e+17 femtogram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Femtogram to Seer (Ser) converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Ashok Kumar K, Ph.D.
Mass and Weight category 2 min read Published Last reviewed Updated

Units explained

Indian / South Asian

Seer (Ser)

What is a seer (ser)?

The seer (ser) equals about 933 grams, or eighty tola (close to one kilogram).

Origin of the seer (ser)

From Hindi/Urdu 'ser', a major pre-metric trade weight.

Where it is used

Historical grain, milk, and produce trade across South Asia.

When and where it was developed

Standardized in British India; aligned near 1 kg after metrication.

Metric / SI

Femtogram

What is a femtogram?

A femtogram (fg) equals 10^-18 kilogram.

Origin of the femtogram

From the SI prefix 'femto-' (from Danish/Norwegian 'femten', fifteen).

Where it is used

Nanotechnology and high-sensitivity mass spectrometry.

When and where it was developed

The femto- prefix was adopted by the CGPM in 1975.

Seer (Ser) to Femtogram conversion formula

Note: this conversion uses a generally accepted modern value. Historical and regional definitions of this unit varied across times and places.

The relationship between seers (ser) and femtograms:

1 seer = 9.331043e+17 fg
1 fg = 1.071692e-18 seer

To convert seers (ser) to femtograms, multiply the value in seers (ser) by 9.331043e+17. To reverse, multiply femtograms by 1.071692e-18.

How to use this converter

Type a value into the calculator. The result in femtograms updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Femtogram to Seer (Ser) converter for the reverse direction.

Step-by-step: convert seers (ser) to femtograms

  1. Write down the value in seers (ser) (seer).
  2. Multiply that value by the factor 9.331043e+17.
  3. The product is the equivalent value in femtograms (fg).
  4. To reverse, multiply the femtogram value by 1.071692e-18.

Worked examples

Example 1 — Convert 1 seer to fg:
1 × 9.331043e+17 = 9.331043e+17 fg

Example 2 — Convert 100 seer to fg:
100 × 9.331043e+17 = 9.331043e+19 fg

Real-world example — Human-scale to atomic dimensions

One seer (ser) equals one billion femtograms — the canonical metric conversion bridging everyday objects and atomic-scale features in physics, chemistry, and electronics.

1 seer × 9.331043e+17 = 9.331043e+17 fg

Real-world example — Meter to nanoscale

One seer (ser) equals one billion femtograms. Physics curricula use this conversion to teach orders of magnitude when introducing the electromagnetic spectrum.

1 seer × 9.331043e+17 = 9.331043e+17 fg

Seer (Ser) to Femtogram conversion table

Standard reference values for converting seers (ser) to femtograms:

Seer (Ser) [seer]Femtogram [fg]
0.019.331043e+15
0.19.331043e+16
19.331043e+17
21.866209e+18
32.799313e+18
43.732417e+18
54.665521e+18
109.331043e+18
201.866209e+19
302.799313e+19
403.732417e+19
504.665521e+19
1009.331043e+19
5004.665521e+20
10009.331043e+20

Frequently asked questions

How many femtograms is 1 seer (ser)?
1 seer (ser) equals 9.331043e+17 femtogram.
How do I convert seers (ser) to femtograms?
Multiply the value in seers (ser) by 9.331043e+17 to get femtograms.
How do I convert femtograms back to seers (ser)?
Multiply the value in femtograms by 1.071692e-18, or use the Femtogram to Seer (Ser) converter.
How many femtograms is 100 seers (ser)?
100 seers (ser) equals 9.331043e+19 femtograms, because 100 × 9.331043e+17 = 9.331043e+19.

Convert Seer (Ser) to other weight units

Show all Seer (Ser) conversions
Metric / SI (18 units)
Seer (Ser) to Attogram (ag) Seer (Ser) to Femtogram (fg) Seer (Ser) to Picogram (pg) Seer (Ser) to Nanogram (ng) Seer (Ser) to Microgram (µg) Seer (Ser) to Milligram (mg) Seer (Ser) to Centigram (cg) Seer (Ser) to Decigram (dg) Seer (Ser) to Gram (g) Seer (Ser) to Dekagram (dag) Seer (Ser) to Hectogram (hg) Seer (Ser) to Kilogram (kg) Seer (Ser) to Quintal (metric) (q) Seer (Ser) to Metric Ton (t) Seer (Ser) to Gigagram (Gg) Seer (Ser) to Teragram (Tg) Seer (Ser) to Petagram (Pg) Seer (Ser) to Exagram (Eg)
Avoirdupois (15 units)
Seer (Ser) to Grain (gr) Seer (Ser) to Dram (avoirdupois) (dr) Seer (Ser) to Ounce (oz) Seer (Ser) to Pound (lb) Seer (Ser) to Clove (clove) Seer (Ser) to Stone (US) (st) Seer (Ser) to Stone (UK) (st) Seer (Ser) to Quarter (US) (qr) Seer (Ser) to Quarter (UK) (qr) Seer (Ser) to Hundredweight (US) (cwt) Seer (Ser) to Hundredweight (UK) (cwt) Seer (Ser) to Wey (wey) Seer (Ser) to Kilopound (kip) (kip) Seer (Ser) to Ton (short, US) (sh tn) Seer (Ser) to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Seer (Ser) to Point (1/100 carat) (pt) Seer (Ser) to Carat (metric) (ct) Seer (Ser) to Scruple (apothecary) (s ap) Seer (Ser) to Pennyweight (dwt) Seer (Ser) to Momme (mom) Seer (Ser) to Mace (mace) Seer (Ser) to Dram (apothecary/troy) (dr ap) Seer (Ser) to Troy Ounce (oz t) Seer (Ser) to Tael (tael) Seer (Ser) to Pound (troy/apothecary) (lb t)
Indian / South Asian (5 units)
Seer (Ser) to Ratti (ratti) Seer (Ser) to Masha (masha) Seer (Ser) to Tola (tola) Seer (Ser) to Chittack (Chatank) (chittack) Seer (Ser) to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Seer (Ser) to Electron Mass (rest) (me) Seer (Ser) to MeV/c2 (MeV/c²) Seer (Ser) to Muon Mass (mµ) Seer (Ser) to Atomic Mass Unit (u) Seer (Ser) to Proton Mass (mp) Seer (Ser) to Neutron Mass (mn) Seer (Ser) to Deuteron Mass (md) Seer (Ser) to Carbon-12 Atom Mass (C-12) Seer (Ser) to Planck Mass (mP)
Astronomical (4 units)
Seer (Ser) to Lunar Mass (Moon) (M☾) Seer (Ser) to Earth's Mass (M⊕) Seer (Ser) to Jupiter Mass (MJ) Seer (Ser) to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Seer (Ser) to Lepton (Biblical Roman) (lepton) Seer (Ser) to Quadrans (Biblical Roman) (quadrans) Seer (Ser) to Assarion (Biblical Roman) (assarion) Seer (Ser) to Gerah (Biblical Hebrew) (gerah) Seer (Ser) to Drachma (Biblical Greek) (drachma) Seer (Ser) to Denarius (Biblical Roman) (denarius) Seer (Ser) to Bekan (Biblical Hebrew) (bekah) Seer (Ser) to Didrachma (Biblical Greek) (didrachma) Seer (Ser) to Shekel (Biblical Hebrew) (shekel) Seer (Ser) to Tetradrachma (Biblical Greek) (tetra) Seer (Ser) to Mina (Biblical Greek) (mina) Seer (Ser) to Mina (Biblical Hebrew) (mina) Seer (Ser) to Talent (Biblical Greek) (talent) Seer (Ser) to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Seer (Ser) to Poundal (pdl) Seer (Ser) to Ton (assay) (US) (AT) Seer (Ser) to Ton (assay) (UK) (AT) Seer (Ser) to Kilogram-force square second/meter (hyl) Seer (Ser) to Slug (slug)

Sources & references

Conversion factor (1 seer = 9.331043e+17 fg) verified against the following authoritative sources:

Results are provided for general reference. Verify critical measurements against an authoritative standard.