Convert Gerah (Biblical Hebrew) to Carat (metric)
Convert gerahs (biblical hebrew) to carats (metric) instantly. 1 gerah (biblical hebrew) = 2.85 carat (metric) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Carat (metric) to Gerah (Biblical Hebrew) converter for the reverse conversion.
Units explained
Gerah (Biblical Hebrew)
The gerah was the smallest Hebrew weight, about 0.57 gram (one-twentieth of a shekel).
From a Hebrew word for a small grain or bean.
Ancient Israelite metrology.
Part of the smallest divisions of the biblical shekel.
Carat (metric)
The metric carat (ct) equals exactly 200 milligrams (0.0002 kg).
From Arabic 'qirat' and Greek 'keration', the carob seed once used as a counterweight.
The worldwide standard for gemstone and diamond mass.
The metric carat was fixed at 200 mg internationally in 1907.
Gerah (Biblical Hebrew) to Carat (metric) 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 gerahs (biblical hebrew) and carats (metric):
To convert gerahs (biblical hebrew) to carats (metric), multiply the value in gerahs (biblical hebrew) by 2.85. To reverse, multiply carats (metric) by 0.350877193.
How to use this converter
Type a value into the calculator. The result in carats (metric) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Carat (metric) to Gerah (Biblical Hebrew) converter for the reverse direction.
Step-by-step: convert gerahs (biblical hebrew) to carats (metric)
- Write down the value in gerahs (biblical hebrew) (gerah).
- Multiply that value by the factor 2.85.
- The product is the equivalent value in carats (metric) (ct).
- To reverse, multiply the carat (metric) value by 0.350877193.
Worked examples
Example 1 — Convert 1 gerah to ct:
1 × 2.85 = 2.85 ct
Example 2 — Convert 100 gerah to ct:
100 × 2.85 = 285 ct
Real-world example — Hair-width scale measurements
A 70-gerah (biblical hebrew) measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like carats (metric) for direct comparison across supplier datasheets.
70 gerah × 2.85 = 199.5 ct
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 gerahs (biblical hebrew)), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 gerah × 2.85 = 8.55 ct
Real-world example — Plastic-film thickness alternates
A 150-gerah (biblical hebrew) plastic film converts cleanly to carats (metric) — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 gerah × 2.85 = 427.5 ct
Gerah (Biblical Hebrew) to Carat (metric) conversion table
Standard reference values for converting gerahs (biblical hebrew) to carats (metric):
| Gerah (Biblical Hebrew) [gerah] | Carat (metric) [ct] |
|---|---|
| 0.01 | 0.0285 |
| 0.1 | 0.285 |
| 1 | 2.85 |
| 2 | 5.7 |
| 3 | 8.55 |
| 4 | 11.4 |
| 5 | 14.25 |
| 10 | 28.5 |
| 20 | 57 |
| 30 | 85.5 |
| 40 | 114 |
| 50 | 142.5 |
| 100 | 285 |
| 500 | 1425 |
| 1000 | 2850 |
Frequently asked questions
How many carats (metric) is 1 gerah (biblical hebrew)?
How do I convert gerahs (biblical hebrew) to carats (metric)?
How do I convert carats (metric) back to gerahs (biblical hebrew)?
How many carats (metric) is 100 gerahs (biblical hebrew)?
Popular weight unit conversions
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Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (13 units)
Sources & references
Conversion factor (1 gerah = 2.85 ct) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.