UK Coin Weight Calculator

UK Coin Weight & Value Guide

Managing British currency, preparing bank bags, or verifying cash registers by weight requires precise coin specifications. The Royal Mint defines exact weights for all circulation UK coins.

Official UK Coin Weights & Bank Bag Specifications

Below are the standard weights and full bank bag amounts specified by UK financial institutions and The Royal Mint:

• 1p Coin: Weight: 3.56 g | Full Bag Value: £1.00 (100 coins = 356 g)
• 2p Coin: Weight: 7.12 g | Full Bag Value: £1.00 (50 coins = 356 g)
• 5p Coin: Weight: 3.25 g | Full Bag Value: £5.00 (100 coins = 325 g)
• 10p Coin: Weight: 6.50 g | Full Bag Value: £5.00 (50 coins = 325 g)
• 20p Coin: Weight: 5.00 g | Full Bag Value: £10.00 (50 coins = 250 g)
• 50p Coin: Weight: 8.00 g | Full Bag Value: £10.00 (20 coins = 160 g)
• £1 Coin: Weight: 8.75 g | Full Bag Value: £20.00 (20 coins = 175 g)
• £2 Coin: Weight: 12.00 g | Full Bag Value: £50.00 (25 coins = 300 g)

Formula for Coin Weight Calculation

To find the total weight $W$ of a quantity of coins of a specific denomination with coin count $n$ and individual coin mass $m$:

$$W = n \times m$$

Total weight for mixed coins is calculated by summing the products across all denominations:

$$W_{\text{total}} = \sum_{i=1}^{8} (n_i \times m_i)$$