Tone of voice

What is tone of voice?

Tone of voice describes how your brand speaks – not just what you say, but the way you say it. It's about word choice, sentence rhythm and how much humour, formality and energy there is in your language. In other words, tone of voice is the linguistic extension of your brand personality. It shapes the reader's experience of you and sets you apart from others, even when your content is similar to your competitors'.

A clear tone of voice reflects your brand values and your culture. It determines whether your communication comes across as approachable, professional, geeky, relaxed or ambitious. That makes it relevant in everything from branding and digital design to content production such as videos, blog posts and social media, where the tone needs to make your message feel authentic and recognisable.

Tone of voice is also about balance. A brand can easily have the same overall voice but adjust the tone depending on whether, for example, you're writing a fact-based product description or a light e-mail campaign. What makes the difference is the consistency you show across platforms and situations – from Google Ads and social posts to customer service and internal communication.

How do you use tone of voice?

You use your tone of voice as a tool to guide all written and spoken communication. It works best when you define both your voice and the nuances that shape the tone in different contexts. For example, voice can express who the brand is, while tone describes how the message is conveyed right now. Voice rarely changes, but the tone can vary depending on whether the situation is serious, humorous or advisory.

When you work with SEO and content marketing, tone of voice is an important part of your user experience. A blog post with a clear, human tone captures the reader's attention far better than something that feels generic or robotic. At the same time, it supports a coherent story across touchpoints – from meta descriptions, where space is tight, to video scripts, where you need to engage quickly.

An example of how you could define your tone might be:

By clarifying the differences between the three – voice, tone and style – you create a set of guidelines the whole organisation can use. It saves time, gives better alignment and raises the quality of your communication.

Why should you know about tone of voice?

You should know about tone of voice because it builds recognition and trust. When your brand communicates consistently, users see you as credible and professional. That has a direct impact on loyalty and on the effectiveness of your marketing. A well-defined tone makes it easier to create content that feels like a natural extension of your brand – from strategy to execution.

Tone can also be a differentiator in a competitive market. Many brands offer similar products or services, but the way they speak makes the difference. A clear tone can therefore increase your conversion rates and engagement, because users feel seen and understood. That applies whether they meet you through SEM ads, e-mails or social media.

What types and variants are there?

Tone of voice covers a wide range, and most brands sit somewhere on a spectrum between formal and informal, or between funny and serious. You can think of it as a set of coordinates that determine where your brand sits in the conversation. It's not about choosing one tone, but about prioritising the dimensions that reflect your personality and target audience.

• Funny vs. serious: Should the tone be light and entertaining or factual and analytical?
• Formal vs. casual: Should you communicate at a distance or on equal terms?
• Respectful vs. irreverent: Should the language reflect authority or challenge conventions?
• Enthusiastic vs. matter-of-fact: Should the energy level be high or calm and sober?

An example of a tone matrix might be:

Once you know your tonal traits, you can make sure your communication feels right – for both your current and potential customers.

How do you handle tone of voice in practice?

You handle tone of voice in practice by building it into your processes. Start by describing the tone in a guidelines document that your team can use across departments. It should be concrete and show how the tone changes by channel and situation. For example, use sample sentences where you mark what fits your voice and what doesn't.

AI tools such as those from HubSpot or similar marketing automation systems can help identify and recreate your tone based on existing copy. That can be useful when you're producing a lot of content quickly — but AI should only support the tone, not define it. A human understanding of the target audience is crucial to keeping it authentic.

To ensure ongoing quality, you can measure the effect of your tone through user feedback or A/B tests. For example, you can let users choose between two versions of the same text and say which they find more credible. If you work with branding strategy or content production, tests like these can reveal whether the tone actually matches your target audience's expectations.

What should you be aware of?

You should be aware that tone of voice isn't static. It evolves as your brand, your culture and your platforms change. That's why you should review your guidelines regularly and adjust them to the market, trends and your understanding of the audience. That doesn't mean changing the personality, but refining the tone so it stays relevant.

Another important point is the link between words and visual identity. A humorous tone loses its effect if your visual design, colour choices or content-style signal the opposite. That's why you should think about your tone together with digital design and social media strategy, so the overall experience is consistent.

Finally, keep an eye on cultural and linguistic differences if you communicate internationally. A tone that works in Danish can have a completely different effect in English. This is especially true when translating campaigns or video scripts, where the voice needs to match the feeling in the language. A strong tone of voice therefore requires strategy, adaptation and consistency in everything you produce.