Select mass from volume or volume from mass, enter the known quantity and unit, then choose an approximate ingredient preset or enter custom density. Options include US customary cups, 250 mL metric cups, mL, L, kg and g.
Assumptions Density-based
- Conversion is volume-to-mass using density: mass (g) = volume (mL) ร density (g/mL).
- Preset densities are approximate input assumptions and may vary with temperature, brand, processing, humidity and filling method. Powder presets represent bulk density rather than intrinsic material density.
- Powder volume depends on filling and packing; match density to the actual preparation. Brown sugar is explicitly labeled packed.
- Unit standards used: US cup = 236.5882365 mL; Metric cup = 250 mL; 1 kg = 1000 g.
- UK/Imperial cup sizes are not supported.
When to Use This Calculator
- Estimating recipe ingredient masses from volume; weigh ingredients directly when baking accuracy matters.
- Standardizing ingredient lists across US and metric kitchens.
- Estimating shipping weights or nutrition calculations when only volume is known.
Input Definitions
- Cups โ select US (236.5882365 mL) or Metric (250 mL), or enter directly in mL/L.
- Kilograms โ choose kg or g for mass output/input.
- Ingredient & Density โ pick a preset or enter a custom density in g/mL.
- Conversions โ kg = cups ร (mL per cup) ร ฯ รท 1000; cups = kg ร 1000 รท [(mL per cup) ร ฯ].
Cup to kg Formula
The following formulas convert cups to kilograms and back, where ฯ is density in g/mL and CmL/cup is 236.5882365 for a US cup or 250 for a metric cup.
- US cup = 236.5882365 mL
- Metric cup = 250 mL.
- 1 kilogram = 1000 grams.
- Example densities (ฯ): water โ 1.00 g/mL; olive oil โ 0.91 g/mL; all-purpose flour โ 0.53 g/mL; honey โ 1.42 g/mL.
How do you convert cups to kilograms? Multiply cups by the cup size in mL (US 236.5882365 or metric 250), multiply by the ingredient density (g/mL), then divide by 1000 to get kilograms.
How do you convert kilograms to cups? Multiply kilograms by 1000 to get grams, divide by density (g/mL) to get mL, then divide by the chosen cup size (mL per cup) to get cups.
Cups to kg Conversion Table
| Cups (US) | Kilograms (kg) |
|---|---|
| 1/16 | 0.015 |
| โ | 0.030 |
| 1/6 | 0.039 |
| ยผ | 0.059 |
| โ | 0.079 |
| โ | 0.089 |
| ยฝ | 0.118 |
| โ | 0.148 |
| โ | 0.158 |
| ยพ | 0.177 |
| โ | 0.207 |
| 1 | 0.237 |
| 1ยผ | 0.296 |
| 1โ | 0.315 |
| 1ยฝ | 0.355 |
| 1ยพ | 0.414 |
| 2 | 0.473 |
| 2ยฝ | 0.591 |
| 3 | 0.710 |
| 4 | 0.946 |
| * Rounded to 3 decimals. Assumes water (ฯ = 1.00 g/mL). US customary: 1 cup โ 0.236588 kg. | |
Example Problem
Convert 2.5 US cups of water to kilograms.
Use the formula: kg = cups ร CmL/cup ร ฯ รท 1000.
kg = 2.5 ร 236.5882365 ร 1.00 รท 1000 โ 0.591 kg (rounded to 3 decimals)
