The most powerful, featured in an infographic for the website Good.is, are Finland, Sweden and the UK’s.
Each will get its holder into 173 countries without organising a visa in advance.
Next on the list, all on 172, are Denmark, Germany, Luxembourg and the US.
New Zealand is at 18th, equal with Austria and Switzerland, but – a bragging rights essential – one place above Australia.
The least powerful passports, meanwhile, are those of Pakistan and Somalia, which will gain entry to 32 countries, Iraq on 31, and Afghanistan on 28.