Suggested bag rating--
Sleeping Bag Temperature Calculator
Estimate a practical sleeping bag temperature rating based on forecast lows, sleeper warmth, pad insulation, and clothing layers.
Updated May 2026No signup requiredBuilt for mobile
Plainspoken planning help
This tool is built for fast, no-nonsense estimating before you buy supplies, pack gear, plan a trip, or make a field decision. Enter your real numbers, check the result, and round up when running short would cost time, money, or safety.
FAQ
Sleeping Bag Temperature Calculator questions
Is this a final professional measurement?
No. It is a practical estimate. Verify anything that affects safety, code compliance, property work, or expensive purchases.
Should I add a reserve?
Usually yes. Real-world conditions are uneven, products vary, and mistakes happen. A small reserve is often cheaper than coming up short.