User-supplied rates only — not local market prices.
CostMage
Budget share
See what share of a budget a cost takes, or solve for the cost at a target share.
You enter quantity and unit rate. Results are arithmetic in the currency unit you type. This is not a UK or regional price guide and does not refresh market data.
Method
Total = quantity × unit rate. Budget share = 100 × cost ÷ budget when budget > 0. Target cost = budget × share ÷ 100.
Assumptions
- No embedded country price table is used.
- Half / entered / double quantity scenarios reuse your rate.
- Not tax-inclusive unless your rate already includes tax.
Questions
Are these local prices?
No. Only the numbers you type are used. CostMage does not invent local benchmarks here.
Which currency?
Display formatting follows the pilot locale. The maths does not convert exchange rates.