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🍳 Cooking Conversions Calculator 2026

Volume, weight, temperature & air fryer conversions for the kitchen

1 cup [US] = 236.588 ml
1 pound = 453.592 grams
350°F = 177°C (Gas Mark 4)

Convert oven recipes to air fryer: Reduce temperature by 25°F (15°C) and time by 20%

Air Fryer: 375°F for 24 minutes
-25°F temp, -20% time

Kitchen Measurement Charts

US Volume Metric Tablespoons Teaspoons
1 cup 237 ml 16 Tbsp 48 tsp
¾ cup 177 ml 12 Tbsp 36 tsp
½ cup 118 ml 8 Tbsp 24 tsp
⅓ cup 79 ml 5⅓ Tbsp 16 tsp
¼ cup 59 ml 4 Tbsp 12 tsp
1 Tbsp 15 ml 1 Tbsp 3 tsp
1 tsp 5 ml ⅓ Tbsp 1 tsp

Oven Temperature Conversion Chart

Description °F °C °C (Fan) Gas Mark
Very Low 250°F 120°C 100°C ½
Low 300°F 150°C 130°C 2
Moderate 350°F 180°C 160°C 4
Moderately Hot 375°F 190°C 170°C 5
Hot 400°F 200°C 180°C 6
Very Hot 425°F 220°C 200°C 7
Extremely Hot 475°F 245°C 225°C 9

Quick Cooking References

🥄 Common Substitutions

  • 1 cup butter = 2 sticks = 227g
  • 1 cup flour = 125g
  • 1 cup sugar = 200g
  • 1 large egg = 50g ≈ 3 Tbsp

🫘 Dry Beans to Canned

  • 1 cup dry = 3 cups cooked
  • 1 lb dry = ~6 cups cooked
  • 15 oz can = 1.5 cups beans
  • 1 cup dry = one 15 oz can

🍳 Air Fryer Tips

  • Reduce temp 25°F (15°C)
  • Reduce time by 20%
  • Shake basket halfway
  • Don't overcrowd

🥘 Slow Cooker to Oven

  • Low 8 hrs = 325°F for 4 hrs
  • High 4 hrs = 325°F for 2 hrs
  • Add liquid, cover tightly
  • Check earlier than time

Frequently Asked Questions

How do I convert oven recipes to air fryer?
For oven to air fryer conversion: Reduce temperature by 25°F (15°C) and cooking time by 20%. Example: 400°F for 30 min → 375°F for 24 min in air fryer. Shake basket halfway for even cooking.
What is gas mark 5 in fan oven?
Gas mark 5 = 375°F = 190°C. In a fan/convection oven, reduce by 20°C: 170°C fan. Fan ovens circulate heat more efficiently, so lower temps work.
How do I convert cups to ml?
1 US cup = 236.588 ml (often rounded to 240ml). 1 metric cup = 250 ml. 1 UK cup = 284 ml. For baking precision, use a kitchen scale instead of volume.
How many tablespoons in a cup?
16 tablespoons = 1 cup. Also: 1 Tbsp = 3 teaspoons = 15 ml. So 1 cup = 48 teaspoons. Half cup = 8 Tbsp, quarter cup = 4 Tbsp.
How do I convert convection oven to conventional?
For convection to conventional: Add 25°F (15°C) to temperature OR add 15% to cooking time. Convection fans circulate heat, cooking faster and more evenly than conventional.
What is the slow cooker to oven conversion?
Slow cooker Low 6-8 hrs = Oven 325°F for 3-4 hrs. High 3-4 hrs = 325°F for 1.5-2 hrs. Use a covered Dutch oven and check liquid levels. May need to add more liquid.
How do I convert Fahrenheit to Celsius for cooking?
Formula: °C = (°F - 32) × 5/9. Quick estimates: 350°F ≈ 175°C, 400°F ≈ 200°C, 425°F ≈ 220°C. For fan ovens, subtract another 20°C.
What is the dry bean to canned bean conversion?
1 cup dry beans = about 3 cups cooked = two 15-oz cans (drained). 1 lb dry beans = ~2 cups dry = 6 cups cooked. Soak dry beans 8 hrs before cooking.
How many teaspoons in a tablespoon?
3 teaspoons = 1 tablespoon. 1 US tablespoon = 14.79 ml (often rounded to 15 ml). 1 UK tablespoon = 17.76 ml. 1 Australian tablespoon = 20 ml.
How do I measure butter without a scale?
US butter sticks have measurements marked. 1 stick = ½ cup = 8 Tbsp = 113g. 2 sticks = 1 cup = 227g. 1 Tbsp butter = 14g.
What's the difference between UK and US measurements?
UK pint = 568 ml, US pint = 473 ml. UK cup = 284 ml, US cup = 237 ml. UK tablespoon = 17.76 ml, US = 14.79 ml. Always check recipe origin!
How do I convert grams to cups for flour?
Varies by ingredient! 1 cup flour ≈ 125g. 1 cup sugar ≈ 200g. 1 cup butter ≈ 227g. 1 cup rice ≈ 185g. For accuracy, use a kitchen scale.
What temperature is a "moderate" oven?
Moderate oven = 350°F = 180°C = Gas Mark 4. This is the most common baking temperature. "Hot" = 400-425°F. "Low" = 250-300°F.
How do I use the air fryer conversion chart?
Take your oven recipe, subtract 25°F from temp, multiply time by 0.8 (reduce 20%). Preheat air fryer 3 min. Don't overcrowd basket. Flip/shake food halfway through.
What is a gill measurement?
An old unit: US gill = ½ cup = 118 ml. UK gill = 142 ml (¼ pint). Rarely used today except in some cocktail recipes. 4 gills = 1 pint.
How accurate are these cooking conversions?
Volume conversions are precise. However, weight varies by ingredient density—flour settles, butter is dense. For best baking results, use a digital kitchen scale in grams.
What is a dash, pinch, and smidgen?
Informal measurements: Dash ≈ ⅛ tsp (liquids), Pinch ≈ 1/16 tsp (what you can pinch between fingers), Smidgen ≈ 1/32 tsp. Used for seasonings to taste.