Read my blog about why I created this here. When Royal Mail prices change please prompt me (comment on my blog or messge me via Mastodon to https://mastodon.me.uk/@Sroot) and I'll update the calculations. thanks!
If you're sending parcels, you might want to check Royal Mail online (also known as Click and Drop) pricing. They sometimes have discounts or offer free collections. https://www.royalmail.com/current-postage-prices currently links to both price lists. Example at the time of writing, the online price for a 10KG parcel is currently £6.99 and the stamp/over the counter price is £7.99
By default, it's assumed you have the standard UK 1st (£1.25p), 2nd (75p), Large 1st (£1.95p) and Large 2nd (£1.55p) which are are the October 2023 prices from Royal Mail (link also includes size and weight limits). Alternatively, enter the values of the stamps you have here and press submit. If you don't need all 4 values use a high number like 9999 so it won't be suggested in the calculation. If you'd like a page for a different country or values comment on my blog and I'll see what I can do.
Known limitations: Can only use up to 9 of each type of stamp (thus 36 stamps in total)
| Your target values | 125 |
| Size | Weight (up to) | First Class | Second Class | ||
|---|---|---|---|---|---|
| Letter | 100g | 125 | 75 | ||
| Large Letter | 100g | 195 | 155 | ||
| 250g | 270 | 240 | |||
| 500g | 330 | 270 | |||
| 750g | 330 | 270 | |||
| Small Parcel | 2kg | 419 | 349 | ||
| Medium Parcel | 2kg | 629 | 549 | ||
| 10kg | 799 | 699 | |||
| 20kg | 1199 | 1049 | |||
| Size | Weight (up to) | First Class | Second Class | ||
|---|---|---|---|---|---|
| Letter | 100g | 275 | 225 | ||
| Large Letter | 100g | 345 | 305 | ||
| 250g | 420 | 390 | |||
| 500g | 480 | 420 | |||
| 750g | 480 | 420 | |||
| Small Parcel | 2kg | 539 | 469 | ||
| Medium Parcel | 2kg | 749 | 669 | ||
| 10kg | 919 | 819 | |||
| 20kg | 1319 | 1169 | |||