Stampulator - the Stamp Calculator This page calculates combinations of stamps needed to reach or exceed the value required for large or heavy items. Read my blog about why I created this here and you can also get in touch with me by commenting on that blog page

Which stamps do you have?

By default, it's assumed you have the standard UK 1st (70p), 2nd (61p), Large 1st (£106p) and Large 2nd (83p) which are are the March 2019 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 117

UK Standard Services

Size Weight First Class Second Class
Letter 100g 70 61
Large Letter 100g 106 83
250g 150 132
500g 197 172
750g 272 233
Small Parcel 1kg 355 300
2kg 550 300
Medium Parcel 1kg 580 510
2kg 895 510
5kg 1585 1375
10kg 2190 2025
20kg 3340 2855

UK Signed for

Size Weight (up to and including) First Class Second Class
Letter 100g 190 181
Large Letter 100g 226 203
250g 270 252
500g 317 292
750g 392 353
Small Parcel 1kg 455 400
2kg 650 400
Medium Parcel 1kg 680 610
2kg 995 610
5kg 1685 1475
10kg 2290 2125
20kg 3440 2955