Prefixes Converter
Enter a value below to convert between metric, imperial, and standard prefixes units.
Convert Prefixes
Enter a value and select the units to convert between base units (10⁰), tera (10¹²), and giga (10⁹).
You can change the units using the dropdowns above or click on a unit button.
Common Prefixes Reference Points
Here are some common prefixes values in Base Unit (No Prefix) (1), Tera (T) (T), and Giga (G) (G). Click any preset value or arrow to load it into the converter.
| Description | Base Unit (No Prefix) (1) | Tera (T) (T) | Giga (G) (G) |
|---|---|---|---|
| 1 base unit (no prefix) unit | 1 | 1.000000e-12 | 1.000000e-9 |
| 5 base units (10⁰) | 5 | 5.000000e-12 | 5.000000e-9 |
| 10 base units (10⁰) benchmark | 10 | 1.000000e-11 | 1.000000e-8 |
| 25 base units (10⁰) | 25 | 2.500000e-11 | 2.500000e-8 |
| 50 base units (10⁰) | 50 | 5.000000e-11 | 5.000000e-8 |
| 100 base units (10⁰) reference | 100 | 1.000000e-10 | 1.000000e-7 |
Prefixes Conversion Formulas
Use the following formulas to convert between base units (10⁰), tera (10¹²), and giga (10⁹).
All prefixes conversions are anchored to the international SI base unit (Base Unit (No Prefix)) for full scientific and engineering accuracy.
More Base Unit & Tera Conversions
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Frequently Asked Questions
All Prefixes Conversion Calculators (6)
Select any dedicated prefixes pair below for worked examples and printable tables
Category Conversion Matrix
Simultaneous comparison of 12 units in this category
Prefixes Unit Definitions & Symbols
Base Unit (No Prefix) (1)
SIUnprefixed SI base unit (10⁰ = 1).
Tera (T) (T)
SISI prefix for 10¹² (trillion).
Giga (G) (G)
SISI prefix for 10⁹ (billion).
Mega (M) (M)
SISI prefix for 10⁶ (million).
Kilo (k) (k)
SISI prefix for 10³ (thousand).
Hecto (h) (h)
SISI prefix for 10² (hundred).
Deci (d) (d)
SISI prefix for 10⁻¹ (tenth).
Centi (c) (c)
SISI prefix for 10⁻² (hundredth).
Milli (m) (m)
SISI prefix for 10⁻³ (thousandth).
Micro (µ) (µ)
SISI prefix for 10⁻⁶ (millionth).
Nano (n) (n)
SISI prefix for 10⁻⁹ (billionth).
Pico (p) (p)
SISI prefix for 10⁻¹² (trillionth).
References
- [1]NIST HB 133 StandardNIST (NIST HB 133 / SP 811)·Checking the Net Contents of Packaged Goods, Handbook 133 - 2019 Edition & NIST SP 811
- [2]BIPM SI BrochureBIPM (BIPM SI-9)·The International System of Units (SI Brochure, 9th Edition)
- [3]NIST SP 811 Appendix B.9NIST SP 811 (NIST SP 811 App. B.9)·NIST Guide to the SI, Appendix B.9: Factors for Units Listed by Kind of Quantity or Field of Science