During Colleen's and my visit to Chesterland this September, Theresa asked "Did the Vikings have slaves?", and as luck would have it, I had just come across this article on QUORA that addresses the question. Yes they did, but it was not quite as we think of it today. The thralls had rights, and it appears that drive towards fairness in justice we associate with Nordic peoples today, was already notable back then.This piece was originally written in Danish and AI translated into English. I have corrected a couple of issues (one cause by a spelling error in the Dansih text); let me know if you find more remaining.
/ Lars (2026-09-25)
I join forces with the club that says: It's hard to say exactly. A very conservative estimate on my part would be around 10–20% of the total population on average.
Probably the biggest obstacle to understanding the full number is probably that bondage worked quite differently from traditional slavery. Not only were there several "entrances" to ending up in bondage, but there were also - unlike direct slavery - different ways to get out of bondage again.
The vast majority of slaves (estimated up to 60–80% of all slaves) were in fact debt slaves in one sense or another. Think of it as the Viking Age's answer to being sent to debtor's prison because you cannot pay what you owe - instead, the creditor in this system could demand that you instead work off the debt (Old Norse: halslausn) as slaves over a certain period of time.
Slaves could also be acquired on the raids or on the many slave markets out in Europe. These were good sources for the slightly wealthier Vikings to secure labor for the household or even a new wife. The Vikings' exports (including some of the best swords, hammers and axes money could buy at the time), wealth and their bloodthirstiness earned them a certain respect in the European trade market at the time. Many understood this, but the trading posts that did not did were made to be the targets of a terrible anger ...
The fact that both women and slaves quite often went with them voluntarily was precisely because Viking society ensured relatively good conditions and safety nets for the classes in society - slaves, for example, were not to be punished until they bled, and there were generally some fairly strict laws, rules and social norms about how slaves should be treated. As slaves, you were at least guaranteed to have clothes, food and drink, as well as relatively gentle punishment. The price for it was often that you had to wear a neck ring of metal - but it is quite mild compared to the conditions that poor people and slaves in elsewhere in Europe suffered.
Thralldom (Bondage) - especially if you were enthralled due to debts - was actually also remunerated to a certain extent. Some areas later had strict regulations for how slaves were to be paid and for what.
The absolute worst and stupidest thing you can do to a Viking (and probably the greatest sin in the Aesir faith, second only to unfounded murder), is to try to cheat or deceive him.
The Vikings valued honour and honesty in their society - trying to cheat another karl (term for a full-fledged citizen) could be punished by servitude, holmgang (a duel against the injured person) or direct execution (in certain periods and areas carried out by the injured person).
As I said, slaves could easily be set free - most often through love or by having paid off their debts or penance. This was often celebrated at a small party, where the slave had his neck ring taken off - the slave was now a "free-neck" (in Old Norse: frhjáls), or what we would today call "freed-man".
However, the slave was still not always completely free after liberation - the slave was still subject to his master's family for usually two to three generations - this relationship was called tyrmsel. During the tyrmsel, the ex-slave was e.g. obliged to vote as and support his former master at meetings and legislative/court assemblies (tings).
Olav the Holy's Saga describes how the earl (chieftain) Erling Skjalgsson from the island of Sola in southwestern Norway (around Stavanger) administered his slaves. He started by always having 30 slaves - they all had their own list of daily tasks, but Erling also gave them a small piece of farmland, as well as time and permission to cultivate the land as they wanted. The slaves were also allowed to sell the result for their own profit. Erling assigned each of his slaves a ransom and a value - most of the diligent ones could work their way free with him within three years.
In the saga, the same Erling also shows a fairly important "trick" - slaves were not covered by the king's law. Olav the Holy, the king of the area at this time, had for a time banned grain exports from Western Norway due to poor harvests and breeding problems. However, Erling decided to circumvent the decree by instead letting his slaves grow and sell the grain. Because they were slaves and did not fully embrace the common legislation, they could export anything they wanted...
However, 30 slaves was quite a lot, even for a well-to-do earl like Erling - as a slave master you had a certain responsibility for catering as well, which resulted in some expenses. Naturally, this also kept the number down a bit.
In an economic sense, slaves acted a bit like a "semi-luxury" from the owner's point of view. With "2026 glasses", it would be a bit like buying a computer of a larger caliber - but more bought as a mixture of promissory note and stock instead as an actual commodity (unless you went abroad).
From the slaves' side, servitude can in modern eyes be equated with "welfare" cash benefits (in relation to basic support), but with an internship aimed at your debt or punishment. Instead of being controlled by the municipality, you were controlled by a host family that you worked for over a period of time. Bondage could be entered into voluntarily to make amends or pay off debts, as well as for punishment for compensation to the victim's family for a crime, which could be anything from fraud to premeditated murder. In many ways, servitude was functionally a mixture of an early welfare system, a (relatively) humane penal system and a decentralised banking and loan system - especially later in the Viking Age.
Therefore, I would also say that it would be quite difficult to measure without a central system - I think it would have fluctuated quite a lot based on the business cycles in society, just like the modern labor market does. There are certainly many incidents we do not know about, which may have triggered periods of much servitude, and vice versa, where slaves were mainly obtained from outside.
Serfdom and slavery, along with the system behind it, were phased out during the 11th and 12th centuries in Denmark and Norway, where the transition in Sweden was a little slower and the last areas did not abolish the system until 1335.
In the end, if there have been larger-scale records of a total number of slaves, then they have long since disappeared, been destroyed, or rotted. Since wealthy families could have large and complicated networks and hierarchies of slaves and other property, only makes the question harder to answer...
These blog pages are found at http://www.beagle-ears.com/lars/pages/
Comments received at lars@beagle-ears.com
(End of page)